join individual key:value maps into a single map using jq

Question

Hi I have below code which has individual key:value maps needs to be merged into a single key:value map

From below code

{
    "Key1": "value1",
    "Key2": "value2",
    "Key3": "value3",
    "Key4": "value4"
}
{
    "Key1": "value1",
    "Key2": "value2",
    "Key3": "value3",
    "Key4": "value4"
}

To below code using jq

{
    "Key1": "value1",
    "Key2": "value2",
    "Key3": "value3",
    "Key4": "value4"
},
{
    "Key1": "value1",
    "Key2": "value2",
    "Key3": "value3",
    "Key4": "value4"
}

Both `from` and `to` are exactly the same? If you [edit] your question to fix that, please add your attempts. — 0stone0, Jul 04 '23 at 16:09
Adding a comma renders it invalid JSON. That seems unwise. Did you mean you want to convert the input stream into a single JSON array? — peak, Jul 04 '23 at 16:44
yes, convert individual key:value maps into a single JSON array — NKRSHNA, Jul 05 '23 at 10:02
Does this answer your question? [How to combine the sequence of objects in jq into one object?](https://stackoverflow.com/questions/34477547/how-to-combine-the-sequence-of-objects-in-jq-into-one-object) — 0stone0, Jul 05 '23 at 15:39

score 0 · Accepted Answer · answered Jul 05 '23 at 13:39

I cannot find the dupe, so here goes.

To add each file as element into one big array, you can use -s/--slurp with the identity filter .:

jq -s '.' file1.json file2.json

… or collect inputs into an array (with -n/--null-input):

jq -n '[inputs]' file1.json file2.json

or without -n:

jq '[., inputs]' file1.json file2.json

You can read more about the differences of slurping vs consuming inputs in Difference between slurp, null input, and inputs filter

Output:

[
  {
    "Key1": "value1",
    "Key2": "value2",
    "Key3": "value3",
    "Key4": "value4"
  },
  {
    "Key1": "value1",
    "Key2": "value2",
    "Key3": "value3",
    "Key4": "value4"
  }
]

join individual key:value maps into a single map using jq

1 Answers1